Question
Download Solution PDFIf the critical angle for total internal reflection from a medium to vacuum is 30∘. Then the speed of light in the medium is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
Total internal reflection (TIR):
- Total internal reflection (TIR) occurs at the interface of two transparent medium when the ray of light travels from a denser medium to a rarer medium.
- The critical angle is the angle of incidence in the denser medium for which the angle of refraction in the rarer medium is 90°.
- Total internal reflection (TIR) of light is the reflection of light within the same medium when a ray of light is incident at the interface of two medium at an angle of incidence which is greater than the critical angle for the pair of media i.e. i > ic.
- The relation between refractive index and critical angle is
CALCULATION:
Given - critical angle (C) = 30∘
- The relation between refractive index and critical angle is
As we know, the refractive index is written as
Last updated on Jun 17, 2025
-> The CUET 2025 provisional answer key has been made public on June 17, 2025 on the official website.
-> The CUET 2025 Postponed for 15 Exam Cities Centres.
-> The CUET 2025 Exam Date was between May 13 to June 3, 2025.
-> 12th passed students can appear for the CUET UG exam to get admission to UG courses at various colleges and universities.
-> Prepare Using the Latest CUET UG Mock Test Series.
-> Candidates can check the CUET Previous Year Papers, which helps to understand the difficulty level of the exam and experience the same.